Gf. Araj et Ra. Azzam, SEROPREVALENCE OF BRUCELLA ANTIBODIES AMONG PERSONS IN HIGHRISK OCCUPATION IN LEBANON, Epidemiology and infection, 117(2), 1996, pp. 281-288
Prevalence of brucella-specific antibodies was measured in 597 persons
in high-risk occupations living in 10 regions of Lebanon using the st
andard agglutination test (SAT), anti-human globulin (Coombs') test (A
HGT) and enzyme-linked immunosorbent assay (ELISA) for measuring immun
oglobulin G (IgG), IgM and IgA. The study population consisted of butc
hers (54%), farmers (35%), laboratory technicians (8%), abbatoir worke
rs (2%) and veterinarians (1%), with 82% males and 18% females. The ov
erall seroprevalence based on SAT and AHGT titres of greater than or e
qual to 80 was 1.7% and 15%, respectively, but seroprevalence varied b
y region from 0-5% in SAT and from 3.4-34% for AHGT. The overall serop
revalence based on ELISA IgG (OD greater than or equal to 0.6), IgM (O
D greater than or equal to 0.6) and IgA (OD greater than or equal to 0
.3) was 57, 61 and 26%, respectively. The highest seroprevalence was n
oted in Biqaa (34%), Kisrwan (24%), Shouf (21%), Sidon (16%) and Aley
(12%) regions. Nineteen percent of those surveyed reported symptoms th
at could be associated with brucellosis. We conclude that exposure to
brucellosis is high among persons in high-risk occupations from all su
rveyed regions in Lebanon. Such findings should be used to design cont
rol measures especially now that the 17 years of civil strife is over.